You may have already seen the post in our forum, but in case you don’t
frequent the site… the answer (posted by our engineering team) is NO,
do not attempt to use voltages above 30 VDC.
http://community.cambiumnetworks.com/t5/PMP-450/PMP450-AP-48-volt-support/m-p/51650#M2172
To quote him: “You may be able to get it running for some time but
eventually, because of the overstress on the parts” and this will
eventually cause them to fail prematurely.
Thanks,
Matt
*From:*Af [mailto:[email protected]] *On Behalf Of *Scott Vander Dussen
*Sent:* Thursday, March 10, 2016 7:27 PM
*To:* [email protected]
*Subject:* Re: [AFMUG] FSK power problem?
Well, we powered several 450 APs this morning off 48v for about 3 hours :)
Thanks,
`S
---
Sent mobile, typed by thumbs.
On Mar 10, 2016, at 16:36, George Skorup <[email protected]
<mailto:[email protected]>> wrote:
At one time, there was a roadmap slide that stated 48V support for
the 450 AP. Long, long before the 450i was ever mentioned. So I
wonder if the hardware supports 22-56V, but they tell us that it's
just the 29.5 standard.
Matt, Aaron, someone.. what's the deal? If the regular 450 AP will
indeed run fine at 48-56V, that would really simplify a lot. Like
I can downsize some DC-DC converters.
On 3/10/2016 1:38 PM, Josh Baird wrote:
Good point. We don't use hardly any 450.. but the spec sheet
does indeed say 22-32VDC.
On Thu, Mar 10, 2016 at 2:20 PM, George Skorup
<[email protected] <mailto:[email protected]>> wrote:
So if I'm reading this correctly... regular 450 APs are
being powered and running happily at 48VDC? That's funny
because they're also supposed to be 30VDC max.
On 3/10/2016 11:45 AM, Scott Vander Dussen wrote:
You know what's funny is we did... But every time we
tested we happened to grab 450 since that's almost
exclusively what were installing now. One time one of
the techs put a FSK SM on it and it died- he mentioned
it in passing but we chalked it up to bad FSK taken
from our graveyard bin on pulls. ��
Thanks,
`S
---
Sent mobile, typed by thumbs.
On Mar 10, 2016, at 09:34, Josh Luthman
<[email protected]
<mailto:[email protected]>> wrote:
That's awesome. Glad it's not too bad.
Next time lab it :)
Josh Luthman
Office: 937-552-2340 <tel:937-552-2340>
Direct: 937-552-2343 <tel:937-552-2343>
1100 Wayne St
Suite 1337
Troy, OH 45373
On Mar 10, 2016 12:31 PM, "Scott Vander Dussen"
<[email protected] <mailto:[email protected]>>
wrote:
As an update, we scrounged up 4 connectorized
APs of our own and Bill Prince has 2 which I'm
driving out to go get. Paul McCall is also
connectorized and shipping me some for
spares. Love this list, thanks guys! We'll
have 80% of the customers restored within 90
minutes, the rest this afternoon.
Whew, fun morning.
-----Original Message-----
From: Af [mailto:[email protected]
<mailto:[email protected]>] On Behalf Of
Chuck McCown
Sent: Thursday, March 10, 2016 8:07 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
Or, if Cambium was nice, they could give you
code to convert an SM into an AP.
-----Original Message-----
From: Chuck McCown
Sent: Thursday, March 10, 2016 9:05 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
If you are good with an iron, you could remove
the regulator chip from an SM and replace it
into the AP (assuming it is the regulator that
dies from overvoltage).
-----Original Message-----
From: Chuck McCown
Sent: Thursday, March 10, 2016 9:05 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
He might could do an advance replacement...
-----Original Message-----
From: Chuck McCown
Sent: Thursday, March 10, 2016 9:04 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
Paul McCall can probably fix those APs.
-----Original Message-----
From: Christopher Tyler
Sent: Thursday, March 10, 2016 9:03 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
Live an learn. At least you'll never do it
again (hopefully).
--
Christopher Tyler
MTCRE/MTCNA/MTCTCE/MTCWE
Total Highspeed Internet Services
417.851.1107 <tel:417.851.1107>
----- Original Message -----
From: "Chuck McCown" <[email protected]
<mailto:[email protected]>>
To: [email protected] <mailto:[email protected]>
Sent: Thursday, March 10, 2016 10:02:07 AM
Subject: Re: [AFMUG] FSK power problem?
We all just shed a collective tear...
At least tomorrow is Friday, right?
Spring his here!
Jaime is bound to put some photos of good food
on the list.
Plenty of reasons to continue to live Scott.
From: Scott Vander Dussen
Sent: Thursday, March 10, 2016 8:58 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
Oh wow, that’s fairly misleading. So I just
smoked a ring of FSK.
From: Af [mailto:[email protected]
<mailto:[email protected]>] On Behalf Of
Josh Baird
Sent: Thursday, March 10, 2016 7:56 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
Yeah, the SI's take up to ~60V, but they
output what you feed them. If you feed them
48V, they output 48V. They do not have
internal DC/DC converters unless I completely
missed a new product announcement from Forrest
(but, I don't see this product on the website).
On Thu, Mar 10, 2016 at 10:55 AM, Scott Vander
Dussen <[email protected]
<mailto:[email protected]>>
wrote:
Thanks,
`S
---
Sent mobile, typed by thumbs.
On Mar 10, 2016, at 07:53, Josh Baird
<[email protected]
<mailto:[email protected]>> wrote:
I haven't heard of this magical
SyncInjector with a built in DC-DC converter
that you speak of!
On Thu, Mar 10, 2016 at 10:48 AM, Scott
Vander Dussen <[email protected]
<mailto:[email protected]>> wrote:
Yes, but we're using SyncInjector
version IO which allows 24-56VDC input and
regulates that back down to 24VDC for the radios.
-----Original Message-----
From: Af [mailto:[email protected]
<mailto:[email protected]>] On Behalf Of
Chuck McCown
Sent: Thursday, March 10, 2016 7:39 AM
To: [email protected] <mailto:[email protected]>
Subject: Re: [AFMUG] FSK power problem?
Dumb question:
You know the FSK have an absolute max
input voltage of 30 VDC with the smoke exit
voltage around 36 VDC, right?
-----Original Message-----
From: Scott Vander Dussen
Sent: Thursday, March 10, 2016 8:34 AM
To: [email protected] <mailto:[email protected]>
Subject: [AFMUG] FSK power problem?
We just changed out a 24vdc 20A AC/DC
power supply with a 48vdc rectifier.
This powers 4 Syncinjectors and 2
Netonix. There is a mix of 450 and FSK APs in
each of those Syncinjectors. When we powered
back up 6 of the 6 FSK wont establish eth link
with the Netonix, all the 450 are fine. Ideas?
Tower climber en route but I'm stumped. TIA
Thanks,
`S
---
Sent mobile, typed by thumbs.
